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Did smallpox cause stillbirths? Maternal smallpox infection, vaccination and stillbirths in Sweden, 1780-1839

Schneider, Eric B. ORCID: 0000-0001-7682-0126, Edvinsson, Sören and Ogasawara, Kota (2023) Did smallpox cause stillbirths? Maternal smallpox infection, vaccination and stillbirths in Sweden, 1780-1839. Population Studies. ISSN 1477-4747

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Identification Number: 10.1080/00324728.2023.2174266

Abstract

While there is strong evidence that maternal smallpox infection can cause foetal loss, it is not clear whether smallpox infections were a demographically important cause of stillbirths historically. In this paper, we use parish-level data from the Swedish Tabellverket data set for 1780–1839 to test the effect of smallpox on stillbirths quantitatively, analysing periods before and after the introduction of vaccination in 1802. We find that smallpox infection was not a major cause of stillbirths before 1820, because most women contracted smallpox as children and were therefore not susceptible during pregnancy. We do find a small, statistically significant effect of smallpox on stillbirths from 1820 to 1839, when waning immunity from vaccination put a greater share of pregnant women at risk of contracting smallpox. However, the reduced prevalence of smallpox in this period limited its impact on stillbirths. Thus, smallpox was not an important driver of historical stillbirth trends.

Item Type: Article
Official URL: https://www.tandfonline.com/journals/rpst20
Additional Information: © 2023 The Authors
Divisions: Economic History
Subjects: H Social Sciences > HC Economic History and Conditions
R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine
JEL classification: J - Labor and Demographic Economics > J1 - Demographic Economics > J13 - Fertility; Family Planning; Child Care; Children; Youth
Date Deposited: 12 Dec 2022 17:00
Last Modified: 28 Feb 2024 00:05
URI: http://eprints.lse.ac.uk/id/eprint/117587

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